题目:Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,"A man, a plan, a canal: P...
分类:
其他好文 时间:
2014-07-09 21:38:15
阅读次数:
207
题目:Given a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The brackets must close in the corre...
分类:
其他好文 时间:
2014-07-09 21:12:58
阅读次数:
221
1、回车换行符chr(10)是换行符,chr(13)是回车,增加换行符select ' update ' || table_name ||' set VALID_STATE =''0A'';'||chr(13)||' commit;'from user_tables删除换行符select id,re...
分类:
数据库 时间:
2014-07-09 20:29:12
阅读次数:
270
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,"A man, a plan, a canal: Pana...
分类:
其他好文 时间:
2014-07-06 16:45:00
阅读次数:
201
$sudo easy_install PILWARNING: '' not a valid package name; please use only.-separated package names in setup.py_imaging.c:75:20: fatal error: Python....
分类:
编程语言 时间:
2014-07-06 13:45:43
阅读次数:
256
Validate if a given string is numeric.Some examples:"0"=>true" 0.1 "=>true"abc"=>false"1 a"=>false"2e10"=>trueNote:It is intended for the problem stat...
分类:
其他好文 时间:
2014-07-05 17:20:00
阅读次数:
176
Given a binary tree, determine if it is a valid binary search tree (BST).
分类:
其他好文 时间:
2014-07-03 19:36:49
阅读次数:
196
Given a string containing only digits, restore it by returning all possible valid IP address combinations.
分类:
其他好文 时间:
2014-07-02 14:45:41
阅读次数:
220
题目
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.
For example,
"A man, a plan, a canal: Panama" is a palindrome.
"race a car" i...
分类:
其他好文 时间:
2014-07-02 09:49:04
阅读次数:
271
【题目】
Evaluate the value of an arithmetic expression in Reverse Polish Notation.
Valid operators are +, -, *, /. Each operand may be an integer or another expression.
Some examples:
["2", "1", "+", "3", "*"] -> ((2 + 1) * 3) -> 9
["4", "13", "5", "/...
分类:
其他好文 时间:
2014-07-02 07:43:36
阅读次数:
212